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2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring), 2021
It is well known that massive multi-input multi-output (MIMO) systems rely on highly accurate channel state information (CSI). Given this critical dependence, we present a general downlink model with maximum ratio transmission (MRT) precoding, applied in a realistic cellular system with multiple antenna base station (BS) with channel correlation.
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It is well known that massive multi-input multi-output (MIMO) systems rely on highly accurate channel state information (CSI). Given this critical dependence, we present a general downlink model with maximum ratio transmission (MRT) precoding, applied in a realistic cellular system with multiple antenna base station (BS) with channel correlation.
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2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008
In this contribution, we investigate the effect of imperfect channel estimation on the bit error rate (BER) performance of uncoded quadrature amplitude modulation (QAM) with maximal-ratio combining (MRC) multichannel reception. The propagation channels from the transmitter to each of the Nr receive antennas are assumed to be affected by (possibly ...
Jacobs L., Moeneclaey M.
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In this contribution, we investigate the effect of imperfect channel estimation on the bit error rate (BER) performance of uncoded quadrature amplitude modulation (QAM) with maximal-ratio combining (MRC) multichannel reception. The propagation channels from the transmitter to each of the Nr receive antennas are assumed to be affected by (possibly ...
Jacobs L., Moeneclaey M.
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IEEE Transactions on Vehicular Technology, 2018
This paper investigates the performance analysis of dual selection (i.e., combining user selection and transmit antenna selection) with maximal ratio combining (MRC) over nonidentical imperfect channel estimation in a multiple-input multiple-output system.
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This paper investigates the performance analysis of dual selection (i.e., combining user selection and transmit antenna selection) with maximal ratio combining (MRC) over nonidentical imperfect channel estimation in a multiple-input multiple-output system.
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Materials Today: Proceedings, 2018
Abstract Post-buckling behavior of imperfect, laminated composite cylindrical panels subjected to axial compressive load has been investigated by means of an equilibrium path approach which uses an arc-length method. Influence of the eigen imperfection shapes and its magnitude on the post-buckling behavior of the cylindrical panel with different ...
D.V. Ramana Reddy +2 more
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Abstract Post-buckling behavior of imperfect, laminated composite cylindrical panels subjected to axial compressive load has been investigated by means of an equilibrium path approach which uses an arc-length method. Influence of the eigen imperfection shapes and its magnitude on the post-buckling behavior of the cylindrical panel with different ...
D.V. Ramana Reddy +2 more
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Imperfect CSI based maximal ratio combining in Shadowed-Rician fading land mobile satellite channels
2015 Twenty First National Conference on Communications (NCC), 2015The maximal ratio combining (MRC) scheme for Shadowed-Rician (SR) fading land mobile satellite (LMS) channels with estimated channel gains is studied, in this paper. For this set-up, a maximum-likelihood decoder is derived under the assumption of the perfectly known channel state information (CSI); then perfect CSI is replaced with the estimated CSI in
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Physical Review B, 1989
The connections between the elasticity and the superelasticity percolation problems are investigated in the case of the two-dimensional granular model. An imperfect mapping between two dual square lattices leads to the inequality f+2\ensuremath{\nu}, f and c being the elasticity and superelasticity exponents.
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The connections between the elasticity and the superelasticity percolation problems are investigated in the case of the two-dimensional granular model. An imperfect mapping between two dual square lattices leads to the inequality f+2\ensuremath{\nu}, f and c being the elasticity and superelasticity exponents.
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Electromagnetic Waves and Electronic Systems
The problems of magnetic resonance (MR) scanning at low signal-to-noise ratio, electromagnetic interference (EMI) and equipment imperfections are considered. Attention is paid to pulsed interference, as well as interference represented by continuous radiation, the frequency and amplitude of which vary chaotically over time.
A.A. Tarasova +4 more
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The problems of magnetic resonance (MR) scanning at low signal-to-noise ratio, electromagnetic interference (EMI) and equipment imperfections are considered. Attention is paid to pulsed interference, as well as interference represented by continuous radiation, the frequency and amplitude of which vary chaotically over time.
A.A. Tarasova +4 more
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Taxes, credit market 'imperfections' and inter-country differences in the household saving ratio
1989This paper analyzes aggregate household saving under the capital market imperfection, which is characterized by the wedge between the borrowing rate and the lending rate. Under these circumstances the assumption of a representative household is unlikely to hold and consumers are distributed into savers, liquidity-constrained consumers and borrowers ...
Koskela, Erkki, Virén, Matti
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Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences
Murata vortex spinning (MYS) is relatively new technology and has gained value over ring and open end spinning in the last years due to its some remarkable advantages like producing yarn with low hairiness and pilling value and good color fastness and abrasion resistance.
Muhammad Qamar Tusief +2 more
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Murata vortex spinning (MYS) is relatively new technology and has gained value over ring and open end spinning in the last years due to its some remarkable advantages like producing yarn with low hairiness and pilling value and good color fastness and abrasion resistance.
Muhammad Qamar Tusief +2 more
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The imperfection sensitivity of axially compressed steel conical shells – Lower bound curve
Thin-Walled Structures, 2021F M Mahidan, O Ifayefunmi
exaly